# Code table 4.204 - Thunderstorm coverage
0 0 None 
1 1 Isolated (1-2%) 
2 2 Few (3-5%) 
3 3 Scattered (6-45%) 
4 4 Numerous (> 45%) 
# 5-191 Reserved 
# 192-254 Reserved for local use 
255 255 Missing